Self returning contamination barrier



FIG. 1 is a perspective view of a self returning contamination barriershowing the design.

FIG. 2 is a front view of the design of FIG. 1.

FIG. 3 is a back plan view of the design of FIG. 1.

FIG. 4 is a side view of the design of FIG. 1.

FIG. 5 is another side view of the design of FIG. 1.

FIG. 6 is a top plan view of the design of FIG. 1.

FIG. 7 is a bottom view of the design of FIG. 1.

FIG. 8 is a side view of the design of FIG. 1 in an alternate positionwith the center depressed; and,

FIG. 9 is a side view of the design of FIG. 1 in an alternate positionwith the center extended.

The broken lines in the drawings illustrate portions of the selfreturning contamination barrier which form no part of the claimeddesign.

CLAIM The ornamental design for a self returning contamination barrier, as shown and described. 